63889 has 4 divisors (see below), whose sum is σ = 73024. Its totient is φ = 54756.

The previous prime is 63863. The next prime is 63901. The reversal of 63889 is 98836.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 63889 - 2⁵ = 63857 is a prime.

63889 is a lucky number.

It is a nialpdrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63809) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4557 + ... + 4570.

It is an arithmetic number, because the mean of its divisors is an integer number (18256).

2⁶³⁸⁸⁹ is an apocalyptic number.

It is an amenable number.

63889 is a deficient number, since it is larger than the sum of its proper divisors (9135).

63889 is an equidigital number, since it uses as much as digits as its factorization.

63889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9134.

The product of its digits is 10368, while the sum is 34.

The square root of 63889 is about 252.7627345951. The cubic root of 63889 is about 39.9768616180.

It can be divided in two parts, 638 and 89, that added together give a palindrome (727).

The spelling of 63889 in words is "sixty-three thousand, eight hundred eighty-nine".